Apparatus and method for selectively allocating cache lines in a partitioned cache shared by multiprocessors

摘要

A computer system includes a cache memory which is shared by multiple processors. The cache memory is divided into a plurality of regions. Each of the processor is exclusively associated with one or more of the regions. All the processors have access to all regions on hits. However, on misses, a processor can cause memory allocation only within its associated region or regions. This means that a processor can cause memory allocation only over data it had fetched. By such arrangement, the “cross-thrash” problem is avoided.